18517666675 has 6 divisors (see below), whose sum is σ = 22961906708. Its totient is φ = 14814133320.

The previous prime is 18517666669. The next prime is 18517666681. The reversal of 18517666675 is 57666671581.

It is an interprime number because it is at equal distance from previous prime (18517666669) and next prime (18517666681).

It is not a de Polignac number, because 18517666675 - 2⁹ = 18517666163 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 370353309 + ... + 370353358.

Almost surely, 2^18517666675 is an apocalyptic number.

18517666675 is a deficient number, since it is larger than the sum of its proper divisors (4444240033).

18517666675 is an equidigital number, since it uses as much as digits as its factorization.

18517666675 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740706677 (or 740706672 counting only the distinct ones).

The product of its digits is 12700800, while the sum is 58.

The spelling of 18517666675 in words is "eighteen billion, five hundred seventeen million, six hundred sixty-six thousand, six hundred seventy-five".